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US 10,162,082 B2Granted
Ophthalmic lens material and ophthalmic lens of such material
AssigneeMiiCs & Partners (Shenzhen) Co., Ltd.
InventorHsiu-Wen Chien
Life of this patent
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Abstract
A wetness-retaining ophthalmic lens material comprises an organic monomer, a cross-linking agent, an initiator, a salt, and a solvent. The salt dissolves in the water dissociates a plurality of anions and cations, which bind to water molecules and retard the evaporation of the water molecules, the ophthalmic lens material thus can keep wet for a long time. An ophthalmic lens made of the ophthalmic lens material is also provided.
Claims8
An ophthalmic lens material comprising:
- an organic monomer having a mass percentage of about 32% to about 81% of the total mass of the ophthalmic lens material;
- a cross-linking agent having a mass percentage of about 0.08% to about 14.6% of the total mass of the ophthalmic lens material;
- an initiator having a mass percentage of about 0.05% to about 12.1% of the total mass of the ophthalmic lens material;
- a salt having a mass percentage of about 3% to about 21.5% of the total mass of the ophthalmic lens material, the salt selected from a group consisting of sodium chloride, lithium chloride, potassium acetate, magnesium chloride, and any combination thereof;
- and
- a solvent having a mass percentage of about 5.5% to about 51% of the total mass of the ophthalmic lens material, the solvent comprising water.
3 more elements
Dependencies are inferred from the claim text.